Method of desiccating blood, &amp;c.



Patented Ian. 29,'I90|. R. STAUF.

METHOD OF DESICCATING BLOOD, 8w.

(Application filed on. a, 1900'.

(No Model.)

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UNITED STATES PATENT. OFFICE.

ROBERT STAUF, or PQSEN, GERMANY.

SPECIFICATION forming part of Letters Patent No.

666,711, dated January 29, 1901.

Application filed 'w 3. 1900. Serial No. 81,923. (No specimens.)

, To all whom it may concern.-

- Figure'l is :1.

Be it known that I, ROBERT STAUF, a subject of the German Emperor, residing at P0- sen, in the German Empire, have invented certain new and useful improvements in methods of obtaining the solid constituents contained in liquids-*snch as blood,milk,and the like-in the form of dry powder, of which the following is a specification.

The object of this invention is a method of manufacturing preparations in-the form of dry powder from liquids, such as blood, milk, and the like.

It consists, substantially, in making a very fine spray of the liquid in question and sub jectiug it to a desiccating process when in that condition, it being of importance that in this process the desiccation takes place at a predetermined temperature,- vbecause if the proper temperature should be exceeded the dried powder might readily be decomposed or its chemical properties changed; Then the liquid is desiccated in the form of a fine spray, .the temperature at which the drying takes place can be more readily regulated than when the liquid is treated in an evaporating vessel. J

The means and devices for practicing the new process maybe of varions'kinds. One suitable form of apparatus is shown inthe accompanying drawings, in which' vertical section. Fig.2 is a side elevation, Fig. 3 is,.a horizontal section on line A B, Fig. '1. s-

The nature and operation of the apparatus are as follows: A pipe aserves to supply air under pressure to the spray-nozzles b. The air under pressure draws the liquid to be operated upon from the vessels (1 through tubes 0 and projects the same in a finely-atomized Y condition-that is to. say, as a fine spray-in oblique jets into the interior of a shaft-like casing At-t-he lowest part of the said casing is provided a su itable source of heatsay a gas -"fire f. The air, admitted laterally through openings provided with suitable reg- .snitable collecting-space away ulating devices or registers D, is heated by the source of heat and rises. The spray of atomized liquid coming from the jets or nozzles b comes in contact and mixes with the heated air, and thewatery constituents of the-sprayare' evaporated. The steam and the dry particles are carried upward by the heated air and by a cone g, extending into the casing said chambers being constituted by suitable casings closed at the top. The sides of said galleryare made of woolen fabric, mill-gauze, or likev pervious material, permitting the air and vapors to pass and escape into the atmosphere, while the dry powder falls down and is collected in the hoppers i, whence it isremoved by openings fitted with suitable clos ing devices, such as rotary valves or the'like. As this arrangement permits exact adjustment of the quantity of. air used and of the heat t-O'hfl produced by the heating device it is eas'yto maintain the temperature of the drying air nomical working and such as not to destroy the properties of thedried powder.

What I claim as'my inventiou,-and desire to secure by Letters Patent, is l The process of obtaining the solid constituents of liquids such as blood, milk, and the like, in the form of powder, said process consisting in converting the liquid into a fine spray, bringing such spray or atomized liquid-into a-regnlated current of heated air so that the liquid constituents are completely vaporized, conveying the dry powder into a from the air current, and discharging the airand vapor separately from the dry powder. In testimony whereof. I have signed my name to this specification in the presence of two subscribing witnesses. ROBERT STAUF.

\Vitn'esses: 1

. HENRY HASPEB,

WoLnumm HAUPT.

e, are. guided into chambersh, sur- 5 rounding the shaft e in the form of a gallery,

at the degree best suited for eco- 7o 

